Structure, magnetic and dielectric properties of nanocrystalline Se-xFe
El-Sayed, Karimat; Mohamed, Mohamed Bakr; Heiba, zein Elabidin; Al-Nabriss, A. R.;
Abstract
Nanocrystalline Se-xFe (x = 3 and 5 wt%) samples were prepared by solid state reaction. XRD revealed the presence of two phases; FeSe2 and Se. HRTEM showed the epitaxial growth of FeSe2 on Se. The magnetization measurements showed ferromagnetic behavior above room temperature for sample with x = 5 wt%. The a.c. conductivity for x = 3 wt% follows the overlapping large polaron tunneling model, while for (x = 5 wt%) sample it follows the correlated barrier hoping model. The temperature dependence of the dielectric measurements revealed an anomaly above room temperature for (x = 5 wt%) sample, while it appeared at room temperature for (x = 3 wt%) sample. © 2014 Elsevier Ltd. All rights reserved.
Other data
| Title | Structure, magnetic and dielectric properties of nanocrystalline Se-xFe | Authors | El-Sayed, Karimat; Mohamed, Mohamed Bakr; Heiba, zein Elabidin ; Al-Nabriss, A. R. | Keywords | Composites;Dielectric properties;Magnetic properties;Microstructures | Issue Date | 1-Jan-2014 | Journal | Superlattices and Microstructures | Volume | 75 | Start page | 311 | End page | 323 | ISSN | 07496036 | DOI | 10.1016/j.spmi.2014.07.005 | Scopus ID | 2-s2.0-84906667414 |
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